[pabohoney1]

I've been looking for one all over the internet and so far have come up empty handed. Both VRSF and n54tuning.com have stopped selling them, apparently for legal reasons. I was also trying to find a simple schematic but no dice. I've found one blurry picture of the bare circuit board and it looks to be an RC low pass with potentiometer, but I'd like to be sure. So I'm asking for some help here. Can someone take a picture of their N54 dp fix with the black sheathing removed? Front and back please. Or if someone has already figured it out, a simple schematic. Thanks!

[dpaul]

Here ya go:

h*t*t*p://www.b*i*m*m*e*r*b*o*o*s*t.com/showthread.php?53622-Make-your-own-oxygen-sensor-tuner

(remove the asterisks)

[dmckmc]

had this saved from the original thread on the old, now shut down forum. I've made several of these and a 650 ohm setting measured on the variable resistor worked well for my N54. I'll need it again in April as my car is due for inspection. I believe I have pics of the device from the thread and the one I made. I'll dig around and post when I can.

[dmckmc]

here is a pic of the device with description from the original thread.

[dmckmc]

Here is the device I made and used successfully.

[330i.germany]

Originally Posted by dmckmc

Here is the device I made and used successfully.

Thanks for uploading these! Where do you have the Pins from?

[AWD Addict]

Why not get an MHD and just use the "fix" that comes with it? You'll need it to tune the DPs anyways, right?

[dmckmc]

Originally Posted by 330i.germany

Thanks for uploading these! Where do you have the Pins from?

I'll try to find my receipts, I forget the name of the company.

Why not get an MHD and just use the "fix" that comes with it? You'll need it to tune the DPs anyways, right?

DP fix is to pass emissions by allowing all O2 monitors to be properly set to ready. MHD just keeps CEL off, doesn't set monitors to ready.

[dmckmc]

Originally Posted by 330i.germany

Thanks for uploading these! Where do you have the Pins from?

https://www.mouser.com/ProductDetail...esrbVktg%3D%3D

[330i.germany]

Originally Posted by dmckmc

https://www.mouser.com/ProductDetail...esrbVktg%3D%3D

Thank you so much, parts are coming next week. Really excited to see if it works

[shea_conlon]

I am trying to make one of these but I am confused as to why this version has 4 wires but the versions that were once sold have 5 wires? Does the wire with the resistor go on #23 only? If so male or female side of #23? I would be trying to install this into a jb4. Thank you in advance.

[dmckmc]

Originally Posted by shea_conlon

I am trying to make one of these but I am confused as to why this version has 4 wires but the versions that were once sold have 5 wires? Does the wire with the resistor go on #23 only? If so male or female side of #23? I would be trying to install this into a jb4. Thank you in advance.

here is a link to basic install via JB4 harness I created. Pin #23 is DME ground or #23 can be connected to the chassis for ground. See page 8 for a pic of connecting this device to a JB4 harness.

https://drive.google.com/file/d/1-d4...ew?usp=sharing

This device only uses one input (#19 OR #20) = 4 wires. Other devices used Both inputs #19 AND #20 = 5 wires.

[shea_conlon]

Got it! Thanks this is excellent.